i can see why you saw an attraction in the building as I live in France and there are still lots of "crummy old buildings" in disrepair
I think that they are found to be attractive because they are different to the UK and give you a "je ne sais quoi" feeling ...... same with buildings in Spain and other similar countries.
I can feel it by looking at your image because I have seen that type of situation so many times and thought "isn't that marvellous, it would never have been left like that in the UK, someone would have bought it and turned it into a whatever we do to our old properties"
much of rural France's, town and countryside buildings are in final decay and they are worth nothing because no one wants them because of the cost of making them "habitable'. It's just not worth it to the of locals because employing so called "artisans" (just ordinary builders in most cases), is £extortionate, in part due to the high social charges that have to be paid.
Lots of DIY in rural France but again materials are expensive.
The young just want to get out of the countryside, move to a City and live in an Apartment which they usually rent.
thanks for posting Michael, we are in the UK for a few more days then back to SW France ...... probably to the rain